Hi, guys. Just wanted to share this: a 0.67x Wide Angle Lens (the kind you get in a set of 3 for smartphones for £3-4 on eBay) will increase the FOV and mostly fix the focus issue (from removing the IR filter) on the PS3 Eye. It does obscure the view a bit, although that might be fixed by placing the lens inside the webcam (if there's room). It still has increased FOV even with the ring blocking it some.

I'm not sure how much the mapping curves can account for the lens's effect on the image, I'll have to play around with it.